Influence of Asian taxa on the Eocene-Oligocene mammalian faunal turnover

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05330
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Stratigraphy/Paleontology
• Research Institution: Kyoto University
• Principal Investigator: Egi Naoko 京都大学, 霊長類研究所, 助教 (80432334)
• Co-Investigator(Kenkyū-buntansha): 鍔本 武久 愛媛大学, 理工学研究科(理学系), 教授 (20522139) ; 西岡 佑一郎 早稲田大学, 高等研究所, 助教 (00722729)
• Co-Investigator(Renkei-kenkyūsha): TOMIDA Yukimitsu 国立科学博物館, その他, 名誉研究員 (00150029)
• Research Collaborator: Thaung-Htike Meiktila大学, 地学部, 教授 ; Zin-Maung-Maung-Thein Magway大学, 地学部, 助講師 ; TSOGTBAATAR Khishigjav Tsogtbaatar モンゴル科学アカデミー古生物センター, 所長 ; JIN Changzhu 中国科学院, 古脊椎動物及古人類研究所, 教授 ; JINTASAKUL Pratueng Nakhon Ratchasima Rajabhat大学, 准教授 ; MURAKAMI Tatsuro 愛媛大学, 大学院理工学研究科
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 哺乳類 / 古第三紀 / 動物相交代 / 生物地理 / 層位・古生物学 / アジア

Outline of Final Research Achievements

“Grande Coupre” or Eocene-Oligocene mammalian faunal turnover has been treated as a phenomenon common in northern hemisphere, and immigration of Asian taxa to Europe has been suggested to be one of the factor. We carried out systematic identification and paleobiogeographic evaluation on fossil specimens from typical Asian localities (Mongolia), Southeast Asian localities (Myanmar and Thailand), and coastal localities (Japan). We found several paleobiogeographic patterns among the examined East Asian taxa: taxa that originated in southern area, and contribute to the turnover; ones that only occur in northern area, and contribute the turnover in Europe; ones that appear in southern part and coastal part, but absent in northern part; ones that suggest connection to Paratethys area, and give no contributions to the turnover.

Free Research Field

古脊椎動物学